For me, mentally, the coming December holiday break marks the "half-way" point in the school year. While this is not necessarily chronologically true, it is certainly emotionally true.
Back when I was a pre-service teacher, I remember seeing a chart like this one that graphs a first-year teacher's motivation and emotion over the calendar year–with November and December being the pit of disillusionment–but don't despair, rejuvenation and hope are just around the corner!
Ten years later, I feel like the chart still applies to me. It is always in November and December that I wander the web to see what other kinds of jobs my credentials and dispositions might match.